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Physical Sciences and Mathematics Commons

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2002

Mathematics

Mathematics and System Engineering Faculty Publications

Functional equations

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Full-Text Articles in Physical Sciences and Mathematics

Existence Of Solutions For Discontinuous Functional Equations And Elliptic Boundary-Value Problems, Siegfried Carl, Seppo V. Heikkilä Jan 2002

Existence Of Solutions For Discontinuous Functional Equations And Elliptic Boundary-Value Problems, Siegfried Carl, Seppo V. Heikkilä

Mathematics and System Engineering Faculty Publications

We prove existence results for discontinuous functional equations in general Lp-spaces and apply these results to the solvability of implicit and explicit elliptic boundary-value problems involving discontinuous nonlinearities. The main tool in the proof is a fixed point result in lattice-ordered Banach spaces proved by the second author. © 2002 Southwest Texas State University.